Adjustable cultivator-arch.



ENu. 699,077.

C. CHRISTENSENY.

ADJUSTABLE CULTIVATOVR ARCH.

(Application filed Jan. 2B, 1902.)

Paffgted Apr. 29,1902.. f

(No Model.)

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CARL CI'IRISTENSEN, OF CLIFTON, ILLINOIS.

ADJUSTABLE CULTIVATOR-ARCH.

SPECIFICATION forming partof Letters Patent N o. 699,077, datedl April 29, 1902. Application filed January 28,1902. Serial No. 91.589. (No model.)

To (1.2i whom it Wray concern:

Be it known that l, CARL CHRrsrENsEN, of Clifton, in the county of Iroquois and State of Illinois, have invented a new and useful Improvenient in Adjustable Cultivator-Arches, of which the following is a specification.

My invention is in the'nature of an improvementon that part of a cultivator-frame which is made in twin sections that straddle a row `of plants and are connected by an elevated which the shovels on -the opposite side have` an independent upand-down movement; and it consists in such an improved and simpliiied construction of twin cultivator-arch as will allow the cultivator to be tilted to one side and either foot ofthe arch raised without tilting the other foot, as will be hereinafter more fully described.'

The gure is a rear View of the cultivator- 'arch with the shovels and their supportingbars attached to the feet of the arch.

In the drawing, A A represent the two legs of the cultivator-frame, each'ofwhich has at the bottom an outturned foot d d. To the tops of the two legsA A' is loosely pivoted at a' and a a horizontal cross-bar B. To the two legs A A at some distance below their upper ends is pivoted at @Fand c2 the lower ends of an arched brace C. This brace is arched, as shown, so as to give more room for the growing plants below it; but its real function is, with the cross-bar B, to convert the legs A and A into parallel-motioned bars, which as one of the legs and its shovels rise or fall always hold the legs parallel to each other, and consequently the feet d and d horizontal, irrespective of the height to which either one of them may be raised. It will therefore be.V seen that the arched character of the b'ar C is not essential; but if the legs were made long enough the bar Cmight be straight and parallel with B. By making it arched, however, I get not only more room for the plants, but the top of the arch is brought up to the level of bar B, and both are perforated with a hole into which a pin hmay be placed to convert the automaticallvadjustable cultivator-arch into a rigid arch when desired.

It will be seen that the lower part of the legs A and A are formed in one piece with the outturned feet d and d', which .extend horizontally far enough to receiveclamps that hold the horizontal bars carrying the shovels, and that this construction permits the shovelbars and shovels to be adjusted horizontally on these feet to increase or diminish the space between the shovels on one side and the shovels on the other side, thus making a very simple, strong, and compact arrangement. With such a construction the following advantages are obtained in a very simple and practical manner, viz:

The person operatingthe cultivator may lift one set of shovels over an obstruction while the other set remains at Work in the ground. Whenione shovel is so lifted, asv

shown in dotted lines,the' shovels remaining at work in the ground maintain a horizontal position instead of beingslanting to one side, as with the old-style rigid arches.

Where thel ground is uneven and higher underone shovel than under the other, each shovel will adapt itself to the height of the ground under it independently of the other.

When one shovelis raised to suchaheight above the other as is usual in actual use, the horizontal distance apart remains practically the same.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. A twin cultivator-frame, comprising vertical legs, formed at their bottom ends with outturned horizontal portions for receiving the clamps of the shovel-bars, a cross-bar.

'loosely joined to the upper ends of said legs, and another cross-bar loosely connected to the said legs at points below their upper ends substantially as shown and described.

2. A twin cultivator-frame, comprising vel'-,

IOO

3. A twin cultivator-frame having vertical look lhe parts rigidly together substantially legs, a cross-bar loosely joined to their upper as described.

ends, and an upwardly-curved arch-bar hav- CARL CHRISTENSEN. ing its lower extremities loosely joined to the Witnesses: 5 said legs of the cultivator-frame, said cross- LOREN JENSEN, bar and arch-bar having coinciding holes, and L. E. 'VANSANT, a locking-pin extending through ILhe same to M. H. SCOTT. 

